# Pier Column

This section defines the circular pier column geometry and properties.

{% hint style="info" %}
**Navigation:** Substructure > Pier > Pier Column

For detailed parameter explanations, see the [Pier Column Reference](https://docs.openbrim.org/templates/steel-tub-girder-bridge-workflow/substructure-stg/pier-stg/pier-column-stg).
{% endhint %}

## Steps

### Step 1: Navigate to Pier Column

Navigate to **Pier > Pier Column** in the tree view.

![Pier Column navigation](https://openbrim.atlassian.net/wiki/download/attachments/2169208836/image-20230222-085245.png?api=v2)

### Step 2: Assign Pier Caps

Click the **three-dot icon** on the **Cap** cell and set the pier caps according to the project, then enter the column names.

### Step 3: Define Column1 Section Data

Click the **three-dot icon** on the **Section Data** cell and select **Edit**.

Enter the following parameters for **Column1**:

| Parameter                              | Value      |
| -------------------------------------- | ---------- |
| Section Length (Starts from Top) \[ft] | 35.25      |
| Start Section                          | ColSec\_P2 |
| End Section                            | ColSec\_P2 |

![Column1 section data](https://openbrim.atlassian.net/wiki/download/attachments/2169208836/image-20230222-084923.png?api=v2)

### Step 4: Define Remaining Column Sections

Repeat the previous steps for **Column2** and **Column3**:

**Column2:**

* Section Length \[ft]: **35.25**
* Start Section: **ColSec\_P2**
* End Section: **ColSec\_P2**

**Column3:**

* Section Length \[ft]: **30.58**
* Start Section: **ColSec\_P3**
* End Section: **ColSec\_P3**

![Column sections](https://openbrim.atlassian.net/wiki/download/attachments/2169208836/image-20230222-090147.png?api=v2)

### Step 5: Configure Offsets and Elevation

Enter the **Transverse Offset \[ft]** and **Bottom Elevation \[ft]** data as shown in the figure.

![Offsets and elevation](https://openbrim.atlassian.net/wiki/download/attachments/2169208836/image-20230222-090622.png?api=v2)

### Step 6: Configure FEM Settings

Navigate to the **FEM** tab to review or adjust finite element model settings.

![FEM settings](https://openbrim.atlassian.net/wiki/download/attachments/2169208836/image-20230222-090938.png?api=v2)

<details>

<summary><strong>Quick Tip:</strong> Transverse Offset Direction</summary>

Offset values use PGL (Project Geometry Line) as the reference point.

![Offset reference](https://openbrim.atlassian.net/wiki/download/attachments/2104689432/image-20230216-130246.png?api=v2)

</details>

## Verification

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The completed pier columns are shown below.
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![Pier columns 3D view](https://openbrim.atlassian.net/wiki/download/attachments/2169208836/image-20230222-091438.png?api=v2)

![Pier columns side view](https://openbrim.atlassian.net/wiki/download/attachments/2169208836/image-20230222-091502.png?api=v2)